Scalping and bolting machine



(No Model.')

WITNESSES J. M. SMITH. SGALPING AND BOLTING MACHINE.

Patented June 24, 1890.

2 Sheets-Shee'b 1.

2 Sheets8heet 2.

(No Model.)

J. M. SMITH. SOALPING AND BOLTING MACHINE. No. 430,789. Q Patented June 24, 1890.

WITNESSES if PZazia'taZ. J

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UNITED STATES PATENT OFFICE.

JOSHUA M. SMITH, OF SPRINGFIELD, ASSIGN OR OF ONE-HALF TO CHARLES F. WVOLFE, OF NEWV MOOREFIELD, OHIO.

SCALPING AND BOLTING MACHINE.

SPEGIFIGATION'forming part of Letters Patent N 0. 430,789, dated June 24, 1890.

Application filed July 9, 1889. gerial No. 316,971.

To all whom it may concern.-

Be it known that I, JosHUA M. SMITH, a citizen of the UnitedStates, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Scalping and Bolting Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in scalping and bolting machines; and the object is to produce a more valuable grade of flour by separating from the partially reduced or cracked wheat, at a suitable stage in its partial reduction, such particles or flakes of bran and germ as may be mixed therewith, whereupon the middlings sifted therefrom are rendered purer and the subsequent reduction thereof more rapid and profitable by reason of the absence therefrom of the bran and other impure portions.

In the accompanying drawings, forming a part of this specification, and in which like reference-letters indicate corresponding parts, Figure 1 represents a vertical longitudinal section of the separator on the line 3 y of Fig. 5 5 Fig. 2, a transverse vertical section of a part of the machine on the linexos of Fig. 1; Fig. 3, a side and end elevation of a brush and its mountings; Fig. at, a side elevation of a portion of one of the link-belt guides and a cross-section of the driving-shaft; Fig. 5, a plan view of the separator with the feed-hop per and the casing removed, portions of the machine being broken away to show the construction; Fig. 6, a plan View of one of the sieves detached; Fig. 7, a transverse section of one of the link-belt guides and a side elevation of one end thereof, with a bracket secured thereto, and a roller and its adjustable bearing; and Fig. 8, a side elevation of the bracket detached, a roller-box, and the means for adjusting it, a portion of the bracket being broken away.

The letter A designates the frame of a scalping and bolting machine, with the necessary inclosing-casing. Suspended therein by the hangers B and the cords O (to be more fully described hereinafter) is an inclined (No model.)

trough or frame D, having a ledge l) at each side thereof for the support of removable frames E, to which are connected sieves E, of various degrees of fineness. These frames are held in place by beads or strips E, and are removable endwise through the slotted cross-piece, as shown at D". or flakes of bran and germ are separated from the flour by passing over the sieves, and are discharged as tailings into the hopper F, while the flour passes through the sieves into the hoppers G below.

In the plan View, Fig. 5, are shown two compartments, side by side, formed by dividing the trough longitudinally by a partition D and each compartment has two grades of sieves. If desired, I may use but one compartment and one or more grades of sieves therein, or I may use a plurality of compartments with grades of sieves therein, according to circumstances. In this wayI may take the grain near its first stage in gradual reduction, pass it through one compartment of my separator, send the resulting products by the usual means to the rolls orother machine, and return them to adjacent compartments in the same separator for further treatment. It is a well-known fact in the art of flourmilling that the more perfectly we can remove all impure or deleterious portions of the grain before the final reduction to flour the better will be the resulting product.

The meshes of the sieves are inclined to be come filled in by particles that are too large to pass through readily. I will now describe my device for keeping the meshes open. Rigidly secured to the sides of the said trough D by means of the supports II are link-belt guides I, (preferably of the form shown in section in Figs. 2 and 7,) with a suitable track for the link belt J along each edge, and having secured to the upper and lower ends, re-

spectively, the brackets K and K, which respectively support the shafts L and L, on which are mounted the smooth rollers M, that carry the aforesaid link belts J, to which motion is imparted by means hereinafter described. The said brackets K are slotted, as shown in Figs. 1, 7, and 8, each having a box The particles 5 slidingly mounted therein, adjustable by means of a screw-threaded bolt q, one end of which engages with said box and the other end of which slides back and forth in the socket r, according to the way the nut s is turned, whereby the tension on each of the link belts J may be conveniently adjusted. Access is had to these parts (by opening the door N in the casing. The said link belts J carry one or more pairs of brackets P, in each one of which is mounted a sliding box P, held in its adjusted position by set-screws Q and supporting one end of the shaft of a transverse cylindrical revolving brush R, the function of which is to clear the meshes of the clogging particles before mentioned. The degree of the contact of the brush with the sieves may be varied, as by adjusting the boxes P, as before suggested, and when the bristles have become bent by revolving the brush-in one direction they may be restored to their normal position by reversing the brush in its bearings, so that itwill revolve in a contrary direction. Motion is transmitted to the said link belts J by means of sprocket-wheels S, (one to each belt,) mounted on a revolving shaft T, turning in bearings T, carried by the frame A, and extending through an elfiptical opening U in each of said link-belt guides I, which may have a metallic plate U as a re-enforcement at that point, with a corresponding opening for the shaft, as shown in Fig. 4:. Why this openingis elliptical will presently appear. Near each end of said shaft T is also mounted a quadrilateral inside bearingcam V, the groove, recess, or slot of which guides a roller WV, turning on a pin or stud Y, secured near the lower end of each hanger B, before mentioned, which is pivotally connected to the said trough D by a stud or pinbolt Z, and likewise near the upper end to the frame Abyabolt Ct. If preferred, the said stud Y may be used without the roller WV. As the said cam V revolves, it guides the said rollerW and causes the hanger B to oscillate in a small are about the bolt a. This vibrating motion will be transmitted in sudden jars to the said trough D and all its rigid connections aforesaid by means of the pivot-bolt Z, whereby the action of the sieve on the particles of grain is accelerated. In the drawings, Fig; 1, the cam is shown somewhat enlarged, in order to show clearlyits design and intended action. I do not wish to confine myself to a cam of four sides, but may use one of any number of sides on the same principle, according to circumstances. The lower end of said trough 1) is supported by cords C, before mentioned, each of which winds on a drum or pulley I), mounted on a shaft 0, turning in bearings 61, supported by frame A. Near each end of said shaft 0 is mounted a ratchet-wheel c, engaging with a pawl or check 1, pivoted to the frame A by the bolt g. A crank h is fitted on each end of the shaft 0 to rotate it, and thus change the inclination of the trough, as desired, which may be done while the machine is running.

The shaft T is rotated by means of apulley t' on one end, while the sprocket-wheel j on the other end transmits its motion through a link belt to a sprocket-wheel Z, mounted on the corresponding end of the shaft m, turning in bearings 71, supported by the frame A, and having a feed-roll 0 mounted on said shaft m, whereby a constant stream is fed from the hopper 19 into the upper end of each compartment in the trough D. The amount of the supply is regulated by means of a spring-controlled hinged side 19 at each compartment of the said hopper 29, having secured near its lower edge a screw-threaded curved bar 19', passing through a stop a on the frame A, and having a coiled spring r" between said stop and said side of hopper p, which tends to close the opening q, through which the feed passes, but is resisted and controlled by the hand-wheel r on the outer end of the said bar 19'. It will be observed that the rotation of the brushes is effected by their impact with the sieves as the link belts J move. This action causes the brushes to project into or through the meshes of the sieves, with the cleaning effect already suggested.

It will be understood that the term middlings refers to the material which passes through the sieves up to the time that it becomes so fine as to come under the denomination of flour, after which the material passing through the sieves or bolting-cloth is properly called flour. It will also be understood that my machine can be used from the time the wheat is passed through the first rolls until after its final reduction. After the wheat has been reduced to a fine state the finer sieves will be used, so that the term sieves of varying fineness will include the ordinary bolting-cloth as well as the sieves proper. The bolting-cloth will be used after the material has reached the proper degree of fineness, whether by the action of the rolls or by previous treatment by this machine. The sudden jar given by the cam to the ,vibrating trough is valuable, because it materially acts in shaking the particles out of the meshes, thus aiding to keep them clear. This sudden action also facilitates the sifting operation.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a scalping and bolting machine, the combination, with a stationary frame, hangers depending therefrom, a screen-frame having screens and suspended by the hangers, supports. depending from the screen-frame, beltguides mounted in the guides, endless belts carried by the rollers, rotatable brushes carried by the belts and arranged to be rotated by being drawn on by the belts as they project fastened to said supports, rollers into the sieves, a cam having sharp angles in its groove and engaging the sieve-frame, and a sprocket on the cam-shaft operating the said belts, whereby a swinging sieve-frame with sudden jerks in its vibration is combined with a brush penetrating the sieves and rotated by impact therewith.

In testimony whereof I affix niy signature in J Witnesses:

E. S. WALLACE, WILLIAM DONNELLY. 

